--- product_id: 497951650 title: "Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria" brand: "brightwell aquatics" price: "26061CFA" currency: XOF in_stock: true category: "Brightwell Aquatics" url: https://www.desertcart.sn/products/497951650-brightwell-aquatics-microbacterstart-xlf-15x-concentrated-live-tank-starter-cycling store_origin: SN region: Senegal --- # 15X concentrated live microbes Rapid ammonia & nitrite reduction Cycles tank in 5-7 days Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria **Brand:** brightwell aquatics **Price:** 26061CFA **Availability:** ✅ In Stock ## Summary > ⚡ Fast-track your aquarium’s health with science-backed microbial power! ## Quick Answers - **What is this?** Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria by brightwell aquatics - **How much does it cost?** 26061CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/497951650-brightwell-aquatics-microbacterstart-xlf-15x-concentrated-live-tank-starter-cycling) ## Best For - brightwell aquatics enthusiasts ## Why This Product - Trusted brightwell aquatics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Emergency Nitrification Rescue:** Instantly restore beneficial bacteria after cleaning or medication to keep your aquatic ecosystem thriving. - • **Supercharged 15X Concentration:** Maximize your tank’s biological filtration with ultra-dense live microbes for lightning-fast cycling. - • **Cycle Your Tank in Under a Week:** Say goodbye to New Tank Syndrome with proven nitrification in just 5-7 days. - • **Long-Lasting Proprietary Formula:** Formulated for maximum microbial longevity, ensuring sustained water clarity and health. - • **Perfect for High-Density Aquariums:** Supports heavy bioloads and new fish additions without compromising water quality. ## Overview Brightwell Aquatics MicroBacterStart XLF is a 15X concentrated live bacterial suspension designed to rapidly establish and maintain nitrifying bacteria in freshwater aquariums. It accelerates the nitrogen cycle, preventing toxic ammonia and nitrite spikes within 5-7 days, ideal for new setups, high-density tanks, and post-cleaning recovery. Made in the USA with a proprietary base for extended microbial viability, it ensures a stable, healthy aquatic environment for fish and invertebrates alike. ## Description Brightwell Aquatics MicroBacter Start XLF Experience a new level of aquarium care with Brightwell Aquatics MicroBacter Start XLF – the ultimate solution for achieving a balanced and thriving aquatic environment. Our concentrated formula is designed to boost the nitrogen cycle in your aquarium, ensuring the rapid establishment of biological filtration and creating a stable habitat for your aquatic companions. It’s particularly useful for new startups, resulting in tank cycling in 5 to 7 days in most cases. This shrimp safe advanced blend works effectively to break down organic waste, keeping your aquarium water pristine. It is meticulously formulated to enhance water quality and eliminate ammonia and nitrite spikes. Whether you're setting up a new tank or maintaining an established one, MicroBacter Start XLF is your go-to solution. Its versatility extends to fish and invertebrate freshwater aquariums and is particularly effective for live planted aquariums, providing powerful support for a diverse range of aquatic environments. FEATURES AT A GLANCE Super concentrated 15x strength formula Useful for rapidly re-establishing nitrification bacteria in case of an emergency Usually cycles in 5-7 days Ideal in aquaria with high population densities and when adding new fish Best used post-cleaning of rocks and surfaces or after use of medication Prevents “New Tank Syndrome” Supplied in a proprietary base for maximum longevity Formulated utilizing extensive data compiled by microbiologists AMERICAN-MADE EXCELLENCE Trust in the quality and excellence of Brightwell Aquatics, an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently strive to deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium. ## Features - Concentrated 15X Suspension of LIVE non-pathogenic microbes, specifically formulated to extremely rapidly establish biological filtration in new aquarium set-ups, and to enhance the rate of nitrification in existing systems. - Useful for rapidly re-establishing nitrification bacteria in case of an emergency - Particularly useful in aquaria with high population densities and when adding new fish. Supplied in a proprietary base which provides for maximum longevity. - Helpful to re-establish nitrifying bacteria after cleaning rocks and surfaces and after use of medications. 1. Rapid reduction of ammonia, and nitrite. 2. Prevents “New Tank Syndrome.” - Takes 5-7 days to cycle. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B086Z6VTJW | | Best Sellers Rank | #51,158 in Pet Supplies ( See Top 100 in Pet Supplies ) #414 in Fish Medication & Health Supplies | | Brand Name | Brightwell Aquatics | | Customer Reviews | 4.5 4.5 out of 5 stars (1,163) | | Item Form | Liquid | | Item Weight | 4.97 Ounces | | Liquid Volume | 125 Milliliters | | Manufacturer | Brightwell Aquatics | | Manufacturer Part Number | BACSTARTXLF125 | | Model Number | BACSTARTXLF125 | | Target Species | Fish | | UPC | 810086019595 | | Unit Count | 1 Count | ## Product Details - **Brand:** Brightwell Aquatics - **Item form:** Liquid - **Item weight:** 4.97 Ounces - **Liquid volume:** 125 Milliliters - **Unit count:** 1 Count ## Images ![Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria - Image 1](https://m.media-amazon.com/images/I/611mZuJRXKL.jpg) ![Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria - Image 2](https://m.media-amazon.com/images/I/81C-8DOHeCL.jpg) ![Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria - Image 3](https://m.media-amazon.com/images/I/81tF2dpddsL.jpg) ![Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria - Image 4](https://m.media-amazon.com/images/I/91j0HHxHI4L.jpg) ![Brightwell Aquatics MicroBacterStart XLF - 15X Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria - Image 5](https://m.media-amazon.com/images/I/71kcxnBzFaL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: I had a major nitrite and nitrate spike. crazy high. my ph was super low, probably the only reason my beta survived. how long will this take to work?** A: I'm sorry but the person who said it would cycle in 2 days is absolutely wrong. Scientifically that cannot and will not happen. If you educate yourself on the nitogen cycle you will see why. You are right about your ph being super low and your beta surving because the lower your ph is; less toxic form or ammonium will be present than the more toxic ammonia. **Q: How long does the water stay cloudy after use?** A: Once the bacteria begins to bloom , the cloudiness could last a couple weeks . API accu-clear will clear up the cloudiness without affecting the cycle. **Q: I have nitrogen spikes in my aquarium sometimes after my water changes. Would using this in replacement water be a reasonable preventative or waste $?** A: This product is hardly a waste of money , I use it in replacement water after every monthly gravel vac to prevent (new water syndrome). My fish seem to instantly detect its presense quicker than Seachems Stability. Nitrogen prevention , however isn't exactly what this product is for. Yes true , beneficial bacteria products help convert ammonia into nitrite , and then nitrite into harmless nitrate. But the cycle time in which this occurs takes many weeks of patience. If your filter is already cycled , it still takes many days to go through the conversion process. Therefore during a nitrogen spike , you would be better off purchasing Seachems Safe (and be prepared for the white powder substance to smell like sulfur) , this is normal and the answer to your nitrogen problem. **Q: When it says remove "filter floss" what exactly does it mean?** A: That means take the filter cartridges out of your filter ........ In other words run it without the carbonated screens that you put in. ## Frequently Bought Together - Brightwell Aquatics MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 4.22 fl oz - API TAP WATER CONDITIONER Aquarium Water Conditioner 16-Ounce Bottle - API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/497951650-brightwell-aquatics-microbacterstart-xlf-15x-concentrated-live-tank-starter-cycling](https://www.desertcart.sn/products/497951650-brightwell-aquatics-microbacterstart-xlf-15x-concentrated-live-tank-starter-cycling) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-07*